The sunflowers are short for the sunflowers. After two years of planting, the sunflowers were found to be adaptable, infertile, resilient and of good oil quality, managing labour, fertilizer and water at low cost, suitable for mountain cultivation, producing 450-550 pounds of acre, producing 40-45 per cent of the oil and producing 2000-2500 yuan. The sunflower is full of treasures, the sunflower cake is a good protein feed for the livestock, and when the sunflower is crushed it is a very good coarse feed for the pigs. The straw makes fibreboards, makes paper, makes fuel and extracts fruit glue. Its cultivation techniques are summarized below:
Choose the good species. High-quality, high-yielding, productive and disease-resistant varieties are selected. This is the case with the united states of america’s short-headed dw 567, dw 667。
Fine. Before seeding, 20-25 cm deep, the ground is razed and the ground is flat. Depending on the force of the ground, farmers are fatter at 3-5 centimetres per acre, calcium per phosphate at 30-50 kg, ammonium per phosphate at 15-20 kg, potassium sulfate at 10-15 kg, or potassium composite fattening at 40 kg。
And sowing in time. In order to avoid flowering slurries, which usually take 80 to 100 days, the season should be between mid-june and late in the rainy season. The seeding method is better by on-demand, two in each den. The seeding rate is 0. 5 kg per acre. The seeding should be shallow, normally 3 cm, increased to 5 cm at a slight drying, and seeding should occur when the soil is in poor condition. Plantation of sunflowers is 60 to 65 centimetres and 25 to 30 centimetres, and irrigated plots can increase the distance, reduce the distance, improve light conditions and increase production。
Scientific management. 1. Fertilizer water management. The pre- and post-absorption period for sunflowers is lower; the demand for potassium is higher and the demand for nitrogen is lowest. Vegetable 5-7 kg of urea per acre can be followed during seeding, fertilized during flower fertilisation combined to water the ditch, 15-20 kg of urea per acre, 10-15 kg of potassium sulphate and about 10 cm depth of fertilization. The amount of water required for the pre-growth period is small, and excessive rainfall also results in long and timely drainage of water from the surface to prevent death from rotting roots. Water should be watered in a timely manner in the event of a drought between the present and the slurry periods。
2. Cultivation. During the birth period, two or three medium-sized cultivations are carried out, the first of which combines seedlings, the second of which takes place one week later, and the third of which takes place before the present rheumatism, which combines the ground with a level above 10 centimetres in order to promote the root of the sun and prevent inversion。
3. Ventilation. Some varieties, during the time when the florist is formed, the blisters in the upper part of the sunflower grow branches and, although they can also form a florist, are usually small and not full of seed grains, which also affect the growth of the main tuber. It is necessary to remove the branches in time to promote the growth of the main tuber. In the case of over-heated or diseased leaves, and in the case of old leaves in the lower part, they should be removed in time for ventilation。
4. Bee pollination. The sunflower is a vermin-based flower crop that can be established only by insect pollination. Honey bees are generally pollinated and a box of bees can afford 5-6 acres. In the absence of a beehive, artificially assisted pollination is necessary, by matching a pair of florists with a small scratch, starting with the flower blooming and taking place every 1-2 days, usually two-3 times. Each pollination works best after the morning dew drys until 11 a. M。
